PHP Regular Expression Exercises: Remove new lines from a string

Last update on December 20 2024 10:25:23 (UTC/GMT +8 hours)

Write a PHP script to remove new lines (characters) from a string.

Sample strings : "Twinkle, twinkle, little star,\nHow I wonder what you are.\nUp above the world so high,\nLike a diamond in the sky.";

Visual Presentation:

Sample Solution:

PHP Code:

<?php
// Original string containing multiple spaces and newlines
$str = "Twinkle, twinkle, little star,\nHow I wonder what you are.\nUp above the world so high,\nLike a diamond in the sky.";
// Using preg_replace to replace one or more consecutive spaces with a single space and removing leading/trailing spaces
echo preg_replace('/\s+/', ' ', trim($str))."\n";
?>

Output:

Twinkle, twinkle, little star, How I wonder what you are. Up
 above the world so high, Like a diamond in the sky.

Explanation:

In the exercise above,

This PHP code takes a string containing multiple spaces and newlines. It then uses a regular expression with "preg_replace()" to replace one or more consecutive spaces with a single space.

Additionally, "trim()" function is used to remove any leading or trailing spaces. Finally, it echoes the modified string.

Flowchart :

PHP Code Editor:

Click to Open Editor

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a PHP script to remove nonnumeric characters except comma and dot.
Next: Write a PHP script to extract text (within parenthesis) from a string.